Uses: a stainless steel bolt through kit, for connecting the toilet cistern to pan. Package included: includesbolts, conical washers, washers and wing nuts. Material: made of stainless steel and rubber, to use. Unassembled kit: easy to assemble, easy to use. 4 pieces a set: for 2 toilet tank use. size:Screw length 74mm, diameter 8mm Material:Stainless steel + rubber colour:Silver Package Contents: 2 sets x toilet bolts(unassembled) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.