Klein Tools 32708 Adjustable Screwdriver,  #1 and #2 Square Removable shaft adjusts within 4-Inch to 8-Inch (10-20 cm) range for numerous length combinations Blades feature a #1 and #2 Square tip for multiple screwdrivers in one tool Proprietary system securely holds blade - as durable as a traditional Klein fixed blade screwdriver Press down to extend or lengthen the shaft Push up to retract or shorten the shaft Removable shaft adjusts within 4-inches to 8-inches (10-20 cm) range for numerous length combinations Blades feature a #1 and #2 Square tip for multiple screwdrivers in one tool Proprietary system securely holds blade - as durable as a traditional Klein fixed blade screwdriver Press down to extend or lengthen the shaft Push up to retract or shorten the shaft