3 8In X 1 1 4In Flat Steel Panel (Body) Washer Bulk Packs Imperial Clamps Data reception indicationBuzzer and LEDS Data reception indicationBuzzer and LEDS Power SupplyLithium battery CR2032 1 Battery LifeApprox 400 48 Pieces Replacement Packs Available: Part # Size Pack Qty C101 25 4 3 4 x 1 2 x 15G 4 C101 26 4 x 9 16 x 16G 4 C101 27 3 3 4 x 1 2 x 17G 4 C101 28 2 1 2 x 1 2 x 17G 4 C101 29 3x 7 16 x 18G 4 C101 30 2 1 2 x 11 32 x 20G 4 C101 31 3 1 8 x 11 32 x 20G 4 C101 32 2 7 8 x 9 32 x 21G 4 C101 33 2 x 9 32 x 21G 4 C101 34 2 x 7 32 x 24G 4 C101 35 1 x 7 32 x 24G 4 C101 36 1 1 2 x 3 16 x 26G 4 3 8in X 1 1 4in Flat Steel Panel (Body) Washer 50 Pack