1.This replacement screw set features standard 1/4-20 male thread and comes with a slotted head in diameter of 15mm. 2.standard 1/4-20 male thread and comes with a slotted head in diameter of 10mm. 3.standard 1/4-20 male thread and comes with a slotted head. 4.standard 3/8-16 male thread and comes with a slotted head in diameter of 12mm. Net Weight: 18.8 g