These are two types of cutting charges. Other models exist.

Large model: Length: 153mm , height w/o legs: 27mm , width: 23mm.
MK-7 MOD-7 BUORD.DR 795510-7-A1

Small model: Length: 153mm , height w/o legs: 11mm , width: 7mm.
MK-7 MOD-1 BUORD.DR 795510-1-D TOOL NO. L-35-1

Photos © M. Jochoms.