The Stanley Bostitch 21671B-ALM auto fire construction stapler includes a seven-year warranty. This Bostitch tool features two function trigger for single fire and auto fire. Autofire rate can be adjusted from 0 to 1600 staples per minute. A quick loading extended magazine reduces reloading time. The Stanley Bostitch 21671B-ALM is excellent for securing fabric to wood frame, pre-upholstery spring-up operation attaches cardboard, webbing, and Propex to frame, and boat seating with stainless steel staples. The Stanley Bostitch 21671B-ALM uses 1/4" (
JK-671) staples and 5/16" (
JK-672) staples.
Schematics (PDF) staples for this stapler:
JK-671 3/8" crown 1/4" leg
JK-672 3/8" crown 5/16" leg