icanfixall
Official GMM hand model
Just found this on ebay and thought it was a fair starting asking price. Who knows where it ends up sold for price. Some of the adapters sell for this asking price. The P type is the stronger units. The J type works very well but its a bit weaker unit.
http://www.ebay.com/itm/P-Type-Gear...Parts_Accessories&hash=item19f18eba3e&vxp=mtr
http://www.ebay.com/itm/P-Type-Gear...Parts_Accessories&hash=item19f18eba3e&vxp=mtr