The B.P. scalpel handle No. 7 is a reusable surgical instrument designed to hold scalpel blades for precise cutting during various surgical procedures.
 
It is typically made from forged stainless steel with a silk matte satin finish for a secure grip and corrosion resistance. The handle is designed to be comfortable to hold and provide good control for the surgeon.
 
B.P. likely refers to the Bard-Parker handle design, a widely used standard scalpel handle. However, it's important to note that the exact origin of the "B.P." designation is not universally agreed upon.
 
Here are some additional details about the B.P. scalpel handle No. 7:
It is a general-purpose scalpel handle that can be used with a variety of scalpel blades.
It is a reusable instrument, but the scalpel blades themselves are disposable and should be replaced after each use.
B.P. scalpel handle No. 7 is a sterile instrument and should be properly sterilized before each use.