T&O UNIVERSAL MAGNETIC BASE - Model: 1030 TO HOLDING POWER: 180 Ibs ARM LENGTH: 11" (280mm) Holds 3/8" and dovetail indicators. Magnetic power: 180 lbs. Base dimensions: 2.28"L x 1.97"W x 2.17"H (58 x 50 x 55mm) Arm length: 11" (280mm)