The GS658L sinker drill (also known as "Perforadora Sinker" in Spanish) (Equivalent to Atlas Copco RH 658L Sinker Drill) is the market leader in India and Brazil. It is a low-cost pneumatic jackhammer, well known for its high return on investment and comfort due to hand-held Pneumatic rock drill. The GS658L is tailor-made to drill through hard-faced rock, granite, and others for bench drilling, quarry drilling, and secondary holes for blasting. The risk of drill jamming is reduced by built-in air flushing which removes drill chips. Fast and convenient tool change is performed with the help of a robust kick-latch retainer. The GS658L sinker drill also has an optional handle bracket and footrest for increased operator comfort.