description adjustable knee kicker the roberts 10-410 economy adjustable knee kicker is engineered with extra heavy aluminum castings and industrial grade steel to provide rugged strength and durability. the kicker features double locking pins to easily adjust the length from 19 in. to 23 in. the high contour neck is specifically designed for use over stretcher heads and poles. this knee kicker provides adequate performance for the diy'er or infrequent installer. california proposition 65 warning. features high contour neck for use over stretcher head and poles center grooved head for adjusting power stretcher heads easy to read, easy to adjust pin depth dial durable powder coated finish specifications acme tools brand name qep acme tools part number 10-410q assembled weight (lbs) 5.6 california proposition 65 warning required yes country of origin taiwan globaltradeitemnumber (gtin) 00075378104100 height (in) 4.75 internal supplier part # 10-410 internet product code (ipc) c68c53d2ad9 length (in) 19.25 manufacturer warranty 60 days package weight 5.6 package weight (lbs) 5.6 upc 075378104100 width (in) 5.0