Frequently Asked Questions
The 438/2 does suit the 492.
No, the largest rated version of a 438 extension socket is the 438/20 which is 20A.
The suitable sockets for 492-WE are :
438/2 - extension socket
402-WE - surface socket
Yes, the surface socket version is a 402/32-WE
The part number would be 248/20 which is a combination screw head 20MM 3/16 BSW.