Search  for anything...

U-100 1/2ml Syringe with Needle, 31G 5/16" 8mm 1/2cc Syringes, Pack of 20

  • Based on 3,818 reviews
Condition: New
Checking for the best price...
$9.90 Why this price?
Save $3.00 was $12.90

Buy Now, Pay Later


As low as $2 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Friday, Sep 18
Order within 1 hour and 22 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Size: 1/2cc-31G 5/16"


Number of Items: 20


Features

  • Plastic and Stainless Steel
  • 1/2cc 31G Syringes:1/2cc syringes,31G 5/16" 8mm,five-faceted cutting new production process and electro-polished to remove burrs, building the highest quality syringe needles on the market.
  • Sterile, Environmentally Friendly Material:Each 31Ga 1/2cc 5/16" syringes come sterility individually package.Pack of 20.
  • Easy to Use: Smooth plunger for easy one-hand operation, leak-proof design, plunger is not easy to fall off.
  • Accurate Measurement: Clear and accurate markings on the barrel of the syringe make it simple to draw the correct dosage every time.
  • NOTE : Not for professional medical use, only for industrial, science lab and experiments using or as home tools.

Description

Capacity: 0.5mlModel:31G 5/16" (8mm)Quantity: 20PCS Our syringes are made of high-quality materials to ensure the safety-durability of our products, but also provides you with better health protection.Multipurpose Use - Can be used for ink refilling, measuring and dispensing fluid, essential oil, perfume separator, lubricants, sealants, glue adhesives applicator, etc.NOTE - Only use for industrial, science lab and experiments using or as home tool.

Package Dimensions ‏ : ‎ 6.3 x 5.59 x 1.22 inches; 2.4 ounces


Item model number ‏ : ‎ A230816-01


Date First Available ‏ : ‎ August 16, 2023


Manufacturer ‏ : ‎ searvgrh


Best Sellers Rank: #158 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #6 in Lab Syringes


#6 in Lab Syringes:


Customer Reviews: 4.5 4.5 out of 5 stars (3,818)


Brand Name: searvgrh


Manufacturer: searvgrh


Set Name: searvgrh 1/2cc 31G 5/16" Syringe Set (20 Pack)


Model Number: A230816-01


Part Number: A230816-01


Item Volume: 0.5 ml


Unit Count: 20 Count


Material: Plastic, Stainless Steel


Sterile: Sterile


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Sep 18

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Wanted a 4mm but this worked the same
Size: 1cc-31G 1/4" Number of Items: 20
I searched for a 4mm needle but this one worked perfectly. The unit numbers are large, the needle is fine and was completely painless. The plunger is a tad bit hard but was perfect for my need.
Reviewed in the United States on August 17, 2026 by Ignacio Santana

  • Excellent
Size: 1cc-31G 1/4" Number of Items: 100
The issue with no name syringes and needles is the sharpness is always hit and miss, even in the same box. These have been consistently sharp and painless every time and I'm disappointed this seller is no longer selling the size I need. Having dealt with inconsistent sharpness with other one I will probably order name brand for my next box since I can no longer get these ... show more
Reviewed in the United States on August 1, 2026 by crashN2u

  • Just what they are
Size: 1cc-31G 1/4" Number of Items: 20
I've order these twice. Fast shipping and easy to use and read the measurements. Small needle, no pain and packaged well. Good price for the money.
Reviewed in the United States on September 12, 2026 by DaDy59

  • Great product
Size: 1cc-31G 1/4" Number of Items: 100
Work very well. No problems with them at all.
Reviewed in the United States on August 23, 2026 by Amazon Customer

  • good product
Size: 1/2cc-31G 1/4" Number of Items: 100
worked as described
Reviewed in the United States on August 26, 2026 by ray c

  • I can't find the one I like
Size: 1cc-31G 1/4" Number of Items: 100
Still ain't satisfied
Reviewed in the United States on July 6, 2026 by Donny Homan

  • Perfect
Size: 1cc-31G 1/4" Number of Items: 20
The gauge is perfect, but need to be careful or it will bend. I use for my GLP1 shots.
Reviewed in the United States on February 14, 2026 by Lucky Starrs

  • Perfect for GLP1 injections
Size: 1cc-31G 1/4" Number of Items: 20
Easy to measure liquids from vial and use. Great for GLP1 injections
Reviewed in the United States on September 11, 2026 by Greyside Cottage

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...