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 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