Specification Brand : uxcell BulletPoint1 : Gauges: 21G; Length of Needle: 25mm / 1-inch; Needle Outside Diameter: 0.77mm / 0.03-inch; Overall Length: 43mm / 1.69-inch; Overall Diameter: 7.6mm / 0.3-inch;50 x Dispenser Needles BulletPoint2 : PTFE needle tube, PP needle base, heat-resistant, lightweight and reusable. BulletPoint3 : The soft PTFE tip is suitable for complex work surfaces, preventing scratches on the surface of the product being used, making dispensing easier. BulletPoint4 : The needle seat adopts double screw locking and large area rotation design, which not only makes the fit more secure but also makes the disassembly easier. BulletPoint5 : The lower the needle gauge, the larger the needle. For very thick fluid applications, use a low gauge needle. Suitable for industrial or laboratory use. Color : Transparent ItemName : uxcell 50 Pcs 21G Plastic Dispensing Needles, 1" PTFE Glue Needle Tube Blunt Luer Lock Tips with PP Flexible Needle for Liquid Glue Gun, Deep Purple ItemPackageDimensions_Height : 9.1 centimeters ItemPackageDimensions_Length : 1.4 centimeters ItemPackageDimensions_Width : 6.1 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : dispensing-needles Manufacturer : uxcell Material : PTFE, PP ModelNumber : Modern NumberOfItems : 50 PartNumber : a24041500ux0163 ProductDescription : Description: 1.PTFE needle tube, PP needle base, heat-resistant, lightweight and reusable. 2. The soft PTFE tip is suitable for complex work surfaces, preventing scratches on the surface of the product being used, making dispensing easier. 3. The needle seat adopts double screw locking and large area rotation design, which not only makes the fit more secure but also makes the disassembly easier. 4. The lower the needle gauge, the larger the needle. For very thick fluid applications, use a low gauge needle. Suitable for industrial or laboratory use.