The transparent sleeve allows precise inspection when stripping and inserting wires. Color-coded tubes allow you to easily pick up and use.the size of the pipe is reduced, the welding will melt and flow through the stripped wire to ensure a firm fixation. Your wires will never slip out of the connector.very suitable for cars, motorcycles, boats, DIY electrical wiring and other outdoor applications. Sopoby welding connector kits comply with ROHS, ISO 9001:2008, SGS and CE standards. (Maximum voltage: 600V)Material:plasticcolour:As shownPackage Contents:80 x White shrink connector: diameter 1.5 mm, cable cross section 0.25-0.34mm2 26-24AWG100 x Red shrink connector: diameter 3.0 mm, cable cross section 0.5-1.0mm2 22-18AWG100 x blue shrink connector: diameter 5.0mm, cable cross section 1.5-2.5mm2 16-14AWG50 x yellow shrink connector: diameter 6.0 mm, cable cross section 4.0-6.0mm2 12-10AWG470 x Heat shrink tube 3 x 20mmOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.