1. Material:45C

2. Founction:constuction reinforced connection,bridge reinforced connection.

3. Specification:D13*40mm, D16*45mm, D19*50mm, D22*55mm, D25*65mm, D28*70mm,

                     D32*75mm, D35*80mm, D38*85mm, D42*90mm, D50*110mm.

4. Shape:round and 12 angular.