I find this very ergonomic device. Its small size allows to have the other hand free. It's convenient to hold the object to be lubricated or hose. About flexible. Great assortment of rigid and fixed lengths. Black Point, the cartridge. It is significantly smaller than the standard. Please do not order for the M470 cartridge. The M470 is a "GUN OTHER". Amazon does not offer the correct cartridge. So it is better to buy a normal and complete the small gun in his hand. This is the only downside. Otherwise it is really nice.