Designed with professional mechanics in mind, the PRS-33.2 combines a massive upright, versatile clamping system and smooth operating electric motor to create a super rigid workstation that offers effortless height adjustment for any bike up to 120lbs (54 kg) Perfect for lifting heavy electric, tandem, and downhill bikes off the ground, but also great for easy height changes during any repair or assembly Clamping height adjusts from 6" to 78" (16198cm) to allow a comfortable working position 5" (127mm) diameter upright tube minimizes flex Integrated work tray for tools and parts and integrated accessory bar for hanging wheels, hoses, etc. Oversized gussets for superior stability when mounting stand to 13533 base plate (sold separately) or directly to floor Fully adjustable 1003D micro adjust repair clamp grips any tube from 7/8 to 3" in diameter Can be made into a double arm repair stand with the addition of the PRS33.2 AOK add-on kit, which includes a second clamp, sliding carriage, work tray, electric motor, power source, chain and hardware These items are dropship only, direct from Park Tool Dealer pays all shipping fees associated Retailers are not permitted to sell on the Amazon.com marketplace unless authorized in writing by Park Tool