YT29A The YT29A rock drill is the most strongest, powerful and highly efficient rock drill in the range. It gives improved productivity and drill steel economy and can be used on all rock formation and in all kinds of applications. Weight 26 KG All length 660MM Air consumption 82L/S Drilling Frequency 40HZ Air pipe inner Dia. 25MM Water pipe inner Dia. 13MM Drilling Hole Dia. 34-42MM Drilling Depth 5M Shank Size 22X108mm Air pressure 0.63Mpa FT160 Air leg: Weight 17KG Length 1800MM Pushing stroke 1370MM FY250 Oil Reservoir: Weight 1.2KG Oil capacity 250ML