No. 1:5.2*0.3*0.3cm 4.2g;No. 2:5.6*0.5*0.5cm 5.6g
No. 3:6.4*0.6*0.6cm 12.5g;No.4:7.4*0.8*0.8cm 20g
No. 5:7.8*1.0*1.0cm 46g;No.6:9.3*1.3*1.3cm 97g
No.7: 154g;No.8: 275g
Purpose: For power tools with collets or connectors, suitable for removing screws or damaged nuts from hard wood or wood layers