Masonry walk-through ladder frame Only $99.90 6.5' Walk-through Masonry frame Only $84.15 Standard Masonry End Frame-5' high Only $71.50 Catwalk-Aluminum Only $108.00 Extension Bracket Only $26.30 8" Caster Only $24.95 Adjustable Screw Jack Only $20.00   Adjustable Screw Jack $20.00 Adjustable galvanized scaffolding screw jack with solid base plate. This scaffold jack fits all standard scaffold frames and has an 18 in. adjusment. Overall height is 24 in. Order Information Item Number: J306 Price: $20.00 Quantity: Features 24" height with 18" adjustment. Specifications Finish Hot-dip Galvanized Type Screw Jack w/ Baseplate Weight 12 lbs. All Prices in US Dollars      Factory direct pricing on American made scaffold