1-break up concrete and other solid object 2-high quality Y20/Y24/Y26/Y19A/YT28 Hand-held Pneumatic jack hammer1. Y20&Y24 are intended for dry drilling,YH24 for wet drilling2. Suitable for either drilling downward or incline of blast holes in medium-hard rock, of for second blasting operation.3. Centrally grouped control, nimble starting, stable running and easy maintenance.ModelWeightAir ...