Please note that this is not an interchangeable handle.
The stitching awl handles are made from African Blackwood and solid brass ferrule. 
 
B is the more durable all-round version, while BS is sharper and better suited to finer work but is more fragile and more prone to breakage if used on thicker or harder leather. Many users prefer to purchase the B range then grind it and narrow down to their desired width.
 
You can purchase the handle on its own and install your preffered awl blade using super gel glue or resin. (Visit here for the BS version awl blades and here for B version awl blade)
 
Alternatively, you can purchase the handle and blade together which we can install for you.
 
The product photos use BS-40 and BS-45.
 
The awl blades are made by the same manufacturer as System S+U needles with the finest and toughest steel from Germany.