For those not wanting to pay Prolines price for their 23mm wrench, here are a couple of links for 23mm sockets in both 1/2" and 3/8" drives if you can't find one locally.
[ame=http://www.amazon.com/exec/obidos/tg/detail/-/B0006BI8ZM/qid=1121195836/sr=8-2/ref=sr_8_xs_ap_i2_xgl263/102-5491322-4787340?v=glance&s=automotive&n=507846]1/2" drive[/ame]
[ame=http://www.amazon.com/exec/obidos/tg/detail/-/B0006BIFRI/sr=1-2/qid=1121196003/ref=sr_1_2/102-5491322-4787340?%5Fencoding=UTF8&n=14023931&s=automotive&v=glance]3/8" drive[/ame]
[ame=http://www.amazon.com/exec/obidos/tg/detail/-/B0006BI8ZM/qid=1121195836/sr=8-2/ref=sr_8_xs_ap_i2_xgl263/102-5491322-4787340?v=glance&s=automotive&n=507846]1/2" drive[/ame]
[ame=http://www.amazon.com/exec/obidos/tg/detail/-/B0006BIFRI/sr=1-2/qid=1121196003/ref=sr_1_2/102-5491322-4787340?%5Fencoding=UTF8&n=14023931&s=automotive&v=glance]3/8" drive[/ame]
