Milwaukee C12 PXP Expander, M12 Uponor. This comes with four expander heads;
20 x 1.9/2.0mm
20 x 1.9/2.0mm
16 x 1.8/2.2mm
25 x 2.3mm
this set comes with a 1x battery and a charger, all in a case, working perfect, all ready for work.