You can use different handpieces to control your cutting and hammering tools.
Some of the parameters changing on each handpiece are:
Different power range and impact control
Different sizes and knob ergonomy
Each handpiece has a different weight, width and length.
Model 901 features breakthrough impact technology with a HUGE power range PLUS fine control. The comfortable, compact shape has an adjustable side hose connection. 901 fits most engraving and stone setting needs including microscopic engraving, deep relief work and bead raising/hammer setting. Made from fully heat-treated stainless steel; includes 6 QC holders. 66mm long, weighs 68g
Includes:
901 Handpiece
9 QC Holders and allen wrench
004-805 Hand Handle
QC Tool Tray
Graver
Steel Points
004-910 - 910 Handpiece KIT
Model 901 is the same handpiece we've seen on 910 KIT and it shares all it's technical info.. The difference between them is based on a most basic attachment of accessories, which makes it more economic. We recommend this model only to users which already own a 004-805 hand handle for graver sharpening and don't wish additional accessories. Made from fully heat-treated stainless steel; includes 6 QC holders. 66mm long, weighs 68g
Includes:
901 Handpiece
6 QC Holders and allen wrench
004-901 - 901 Handpiece
It is the finest impact handpiece for confident execution of ultra-fine engraving including bulino and banknote styles (this handpiece is not intended for stone setting.) features heat-treated stainless steel construction, an elegant graver-style handle and adjustable side hose connection. 61mm long, weighs 51g
Includes:
921 Handpiece
6 QC holders and allen wrench
004-921 Handpiece
Stock an equal quantity of holders compared to the quantity of gravers and tools you use normally. You'll save time when need to change your tools in the handpieces.
004-806 Extra Holders (10 Units Pack)
Unmatched combination of power and control in an elegant, compact handpiece. You are looking at a breakthrough in impact power
004-940 Handpiece with Palm Knob (Picture)
004-941 Oval Knob ( Handpiece not included)
Wide power range. Great for stone setting, hammering, medium to deep engraving. Stainless steel construction. Set screw chuck holds square tools up to 2,5mm and round tools to 3,3mm diameter 114mm long, weighs 156g