JCB 920w SDS Hammer Drill Model Number: SDS920 This JCB 920W SDS plus rotary hammer drill is best suited for sustained or heavy duty drilling in hard materials. Compare View Product JCB 780w SDS Hammer Drill Model Number: SDS780 This JCB 780W 3-function SDS plus rotary hammer drill is best suited for sustained or heavy duty drilling in hard materials. Compare View Product