ticonn 250pcs heat shrink wire connectors, waterproof automotive marine electrical terminals kit, crimp connector assortment, ring fork spade butt splices ticonn easiest wire connector on the market - ticonn heat shrink connectors whether you are working on your boat, vehicle, home or scientific projects, ticonn heat shrink connectors will ensure strong crimps, increased current flow and waterproof connections every time! specification: --shrinkage ratio 3: 1 --minimum shrink temperature: 80° c --full recovery temperature: 130° c --operating temperature: from -55° c to 125° c note: for best results, please choose the right connector, use a hot air gun, heat evenly until connector reduces in size and the adhesive flows, filling gaps within the terminals. package includes: red 22-18 awg blue 16-14 awg yellow 12-10 awg heat shrink rings #10, 1/4", 5/16" & 3/8". heat shrink butts male and female quick disconnects . spade terminals 'forks" for stude size #10