NEW ALM SPOOL HEAD ASSEMBLY. Suitable for the following Ryobi models. Contains 1x Housing, 1x Spool & Line, 1x Spool Retaining Bolt, 1x Spring. Supplied with 5/16UNC x 1/2" right hand thread bolt. 71-51315, 71-51316, 71-51715, 71-51425.
eBay