Choose your colors! Pick the block and end cover colors that you want. Ten colors available. Beige, yellow, white, green, red, gray, black, orange, brown or blue. If you do not send a note after the purchase, items will be shipped out as pictured.Technical Data (UL) Rated Voltage: 600V Rate Current: 30A Conductor Cross-section, Solid (AWG): 22-10 Conductor Cross-section, Flexible (AWG): 22-10 Rated Impulse Withstand Voltage: 6KV Torque (N-m): 0.6 Screw: M3 Wire Strip Length: 9-11mm Insulating Material: PA TxHxW (mm): 6.1 x 39.6 x 40.35 (Individual Blocks) DIN Rail (mm): 35, 32 Jumper/Bridge: Press-fit/Insertion. This kit includes 20 DK4N Dinkle terminal blocks, 4 SS2 end brackets, 2 DK4NC end covers, 2 DSS4N-10P press-fit jumpers, 2 DK4N-PE Ground Blocks, 2 DK2.5NC-PE ground block covers, and a 8" piece of aluminum RoHS rail.