Light Blaster Compatibility: Canon EF and EF-S lenses, Nikon F lenses with adapter Construction: Polycarbonate, stainless steel Tripod Mount Thread: 1/4"-20 Dimensions: 6.3 x 5.5 x 3.7" / 16.00 x 13.97 x 9.39 cm Weight: 5.36 oz (152 g)