Hi TJ1, this particular tool suits all SB models from the Queen bowling green mower to the 14" Model 40 SB terrace mower. Here are the dimensions:
Total Length: 1ft 6 1/2"... (47 cm)
Length from end to centre of tapped hole: 8 1/2"... (21.5cm)
Square section rod: 1/2".....(12.5mm)
Drill and tap and use a suitable 5mm dome headed screw and nut. wink
cheers2


Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member.
Kindest Regards, Darryl grin