https://www.stapleheadquarters.com/ItemForm.aspx?Item=PS5016
Spotnails PS5016 air staple gun, 1/2" Crown. Uses Duo-Fast 50 staples.
PS-5016 Spotnails 1/2-inch Crown pneumatic staple gun, 20 Ga gauge. Uses Duo-fast 50 series staples up to 9/16" (14mm) staple leg length.
air staple gun