* Type S1 Whole stamping with accurate dimension, good sizeconsistency and easy interchange and have high precision ofcombination.
* Type S4 and S5 made by three special mechanical parts andprecision casting with accurate dimension. Materials includecast steel (Galvanized) and stainless steel, they both havehigher clamping force.
* The fastener applies to different width of belt with good performance of combination.
* Surface gaivanized, good performance of antirust.
* Equipped with the locknut which prevent the loose in the operation.