Polypropylene tips include a plastic double helix locking hub, with a polypropylene canula (tubing) based on gauge size. They are offered in 0.5 and 1.5 inch lengths. These tips are excellent for dispensing into small areas or through holes. The luer locking helix thread prevents the tip from working loose under pressure. Flexible needle tips for use with most fluids and especially good for reactive adhesives and moisture sensitive fluids such as cyanoacrylate instant glues and most solvent based fluids. All tips are supplied in sealed packs of 50 or bulk packs.