T-Bolt Clamp with Hollow Shaft is light type of Hose clamps, because the shaft make light weight.Theyare widely used in automobiles, tractors, forklifts, locomotives, ships, mining, petroleum, chemical, pharmaceutical, agriculture and other water, oil, steam, dust, etc., is the ideal connection fasteners. Item: T-Bolt Clamp Standard:American and Europea Material: Carbon Steel, Stainless Steel Bolt & Nut:Carbon Steel, Stainless Steel Threads of Bolt & Nut: Metric or as required Surface: Zinc Coated, Yellow or Silver Size: (17-19)-(240-252) Packing: Cartons on pallet.