The HB2 was the blade that came standard on every HeadBlade Classic, the HeadBlade razor that started it all in 1999. Over the years HeadBlade introduced new HeadBlade handles (the ATX and MOTO) that utilize the HB4 and HB6 blades which are, technically, far superior to the HB2.
However, there remains a group of original HeadBladers still using the Classic and Sport. HB2 is older technology and a more aggressive blade than the HB4/HB6.
We DO NOT recommend you use this blade with the ATX or the MOTO. It is NOT designed to be used with any of newer models. The HB2 is ONLY for the Sport or Classic.
The HB2 package now comes with 10 cartridges and 2 adapters.