For Use on Carpet Padding, Insulation, Roof Paper, House Wrap. Specifications: Weight: 2 lbs. 8 oz.; Dimensions: 3 3/4" H x 1 3/8" W x 11 3/8" L; Fastener Range: 3/8" to 9/16"; Wire Gauge: 19; Wire Size: .05"; Crown Width: 15/32", Load Capacity: 168. Mode of Operation: Manual.