<b>Precision Manufactured, Sturdy & Durable：</b><br> ✪ Made Of Durable Aluminum Material with,Super Lightweight Rails ,With Solid Structure ,offer durable performance in the field.<br> <b>Specification:</b><br> <br>✪ 3-Slot: Weight: 0.024 LB; Size: 1.54*0.79*0.31 In <br>✪ 5-Slot: Weight : 0.037 LB; Size: 2.13*0.79*0.31 In <br>✪ 7-Slot: Weight: 0.048 LB; Size: 2.91*0.79*0.31 In <br>✪ 9-Slot: Weight: 0.066 LB; Size: 3.71*0.79*0.31 In <br>✪ 13-Slot: Weight: 0.092 LB; Size: 5.28*0.79*0.31 In <br>Package List:</b><br> <br>✪ 1 x 3-slot Rails <br>✪ 1 x 5-slot Rails <br>✪ 1 x 7-slot Rails <br>✪ 1 x 9-slot Rails <br>✪ 1 x 13-slot Rails <br>✪ 12 x Locking Nuts <br>✪ 12 x Matched Screws <br>✪ 3 x Allen Wrench.