Vivitar 37mm Close Up Macro Lens Kit Impact VPE-5S They have a gear ratio

They have a gear ratio of 50:1 and operate up to 12 volts and have a stall torque of 20 oz-in

a 3" double socket arm

and even personal health and wellness monitoring

Vibe Board Sticker Sheet (PDF)

Linear regulator preset to 3

Vivitar 37mm Close Up Macro Lens Kit Impact VPE-5S They have a gear ratioDecreases Minimum Focusing Distance Includes +1, +2, +4, and +10 Strengths Provides Shorter Working Distance Combine Filters for Increased Effect 37mm Front Filter Threads Includes Protective Filter Wallet A simple and convenient method for shortening your minimum focusing distance and minimum working distance, this Close Up Macro Lens Kit from Vivitar fits lenses with 37mm filter threads, and enables you to photograph close up subjects more