T-Bolt clamps provides more clamping force than the worm gear clampsT-Bolt Band clamp works well when secure a silicone section to stronger, thick steel pipingit produces a greater amount of clamping pressure in the areas which are circled.Bandwidth: 3/4" (19mm)Common sizes below: Part #Fits HoseI.D.ClampSizeMin.SizeMax.SizeWD-19TBC-1381"(25.4mm)1-3/8"(34.9mm)1-1/4"(31.8mm)1-1/2"(38.1mm)WD-19TBC-1621-1/4"(31.8mm)1-5/8"(41.3mm)1-1/2"(38.1mm)1-3/4"(44.5mm)WD-19TBC-1751-3/8"(34.9mm)1-3/4"(44.5mm)1-5/8"(41.3mm)1-7/8"(47.6mm)WD-19TBC-1881-1/2"(38.1mm)1-7/8"(47.6mm)1-3/4"(44.5mm)2"(50.8mm)WD-19TBC-2001-5/8"(41.3mm)2"(50.8mm)1-7/8"(47.6mm)2-1/8"(54.0mm)WD-19TBC-2121-3/4"(44.5mm)2-1/8"(54.0mm)1-15/16"(49.2mm)2-1/4"(57.2mm)WD-19TBC-2251-7/8"(47.6mm)2-1/4"(57.2mm)2-1/16"(52.4mm)2-3/8"(60.3mm)WD-19TBC-2382"(50.8mm)2-3/8"(60.3mm)2-3/16"(55.6mm)2-1/2"(63.5mm)WD-19TBC-2502-1/8"(54.0mm)2-1/2"(63.5mm)2-5/16"(58.7mm)2-5/8"(66.7mm)WD-19TBC-2622-1/4"(57.2mm)2-5/8"(66.7mm)2-7/16"(61.9mm)2-3/4"(69.9mm)WD-19TBC-2752-3/8"(60.3mm)2-3/4"(69.9mm)2-9/16"(65.1mm)2-7/8"(73.0mm)WD-19TBC-2882-1/2"(63.5mm)2-7/8"(73.0mm)2-21/32"(67.5mm)2-31/32"(75.4mm)WD-19TBC-3002-5/8"(66.7mm)3"(76.2mm)2-25/32"(70.6mm)3-3/32"(78.6mm)WD-19TBC-3122-3/4"(69.9mm)3-1/8"(79.4mm)2-29/32"(73.8mm)3-7/32"(81.8mm)WD-19TBC-3383"(76.2mm)3-3/8"(85.7mm)3-5/32"(80.2mm)3-15/32"(88.1mm)WD-19TBC-3503-1/8"(79.4mm)3-1/2"(88.9mm)3-9/32"(83.3mm)3-19/32"(91.3mm)WD-19TBC-3623-1/4"(82.6mm)3-5/8"(92.1mm)3-13/32"(86.5mm)3-23/32"(94.5mm)WD-19TBC-3883-1/2"(88.9mm)3-7/8"(98.4mm)3-21/32"(92.9mm)3-31/32"(100.8mm)WD-19TBC-4123-3/4"(95.3mm)4-1/8"(104.8mm)3-29/32"(99.2mm)4-7/32"(107.2mm)WD-19TBC-4384"(101.6mm)4-3/8"(111.1mm)4-5/32"(105.6mm)4-15/32"(113.5mm)WD-19TBC-4884-1/2"(114.3mm)4-7/8"(123.8mm)4-3/4"(120.7mm)5-1/16"(128.6mm)WD-19TBC-5385"(127.0mm)5-3/8"(136.5mm)5-5/32"(131.0mm)5-15/32"(138.9mm)