5-Point Penta Socket for 1/2" Penta Head Bolt (7/8" Nut) – Works with a wide range of applications, ranging from 0.825" to 0.915" point-to-flat for pentagon nuts, with an outer diameter (OD) of 1.125" T-Handle Design – Provides enhanced leverage and ease of use Cr-Mo Alloy Steel Forging, Heat Treated. Lifetime warranty Radius Corner Design – Prevents damage to the corners of the nut, ensuring a secure fit without harm Ideal for Various Applications – Opens transformers, switchgear, civic and municipal infrastructure, government equipment, and more Penta wrenches, T handle wrenches,5-Point 0.915" Socket for 1/2"-13 Penta Head Bolt, 1.125" OD, Heat Treated Cr-Mo Alloy Steel, For Use on Pad-Mounted Transformers and Secondary Pedestals