Gardner Bender HST-187B Heat Shrink Tubing, 3/16 - 3/32 Inch. x 4 Inch., Cable Insulation / Marking / Mechanical / Flame Retardant & Moisture Protection, 5 Pk., Black FLAME-RETARDANT polyolefin construction resists common fluids and solvents - SELF-EXTINGUISHING tubing will not drip, crack or flow when heated to shrink temperatures REPAIRS, STRENGTHENS and PROTECTS cable insulation, mechanical abrasion and moisture, to ensure strong connections IDEAL FOR general purposes uses including adding perspiration-resistant grip to tool and sporting handles or sealing rope ends SHRINK TEMPERATURE: 120C (250F) to 250C (480F) - Continuous Operating Temperature: -40C (40F) - 125C (257F) Meets UL 224, 125C; CSA C22.2 #198.1, 125C; MIL-DTL-23053/5, Class 1 and 2, AMS 3636 and 3637; DEF STAN 59-79, Issue 3 Type 2a Durable construction For a perfect fit Shrinks when heat is applied Total 4' length Black colored tubing