Fits the Duo-Fast Stapler Tacker DF-859 and the Duo-Fast Hammer Tacker DF-550
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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
These are used for applying netting and fabrics. This stapler will take a heavier gauge 1/2" crown staple. Much quicker and will save you time on all jobs over hand tackers. Shoots up to 1700 staples per minute. Lightweight, easy to adjust and the double length magazine provides large load capacity. The BS-680 uses 5/16" (JK-682) staples and 1/2" (JK-683) staples. Schematics (PDF) Staples for this stapler: JK-682 1/2" crown 5/16" leg JK-683 1/2" crown 1/2" leg