Electric Strike, 16-24VAC/DC, Fail Secure, 5-7/8 x 1-1/4, Satin Chrome The adjustable 1000 & 2000 Seies is a light commercial series. These strike are non-handed used in new and replacement applications. The stike is used in poorly aligned frames. Holding force is 900lbs and a duribility testing of 500, 000 life cycles. Satin Chromium Plated