590mm Extension Timber Stair Posts (Vic Ash) 30mm Half Dowel then you will need to

then you will need to order this M6 Left-Hand Thread Mandrel

Where you have a long run of straight timber handrail that can't be supplied in 1 continuous length

Approximately 48mm in outside diameter with a internal diameter of 41

so you DON'T need to order this product unless you want a spare or unless you break the one that comes with it and need to order another

It is the ultimate in wood glues

590mm Extension Timber Stair Posts (Vic Ash) 30mm Half Dowel then you will need toA 590mm long Victorian Ash post, designed to extend the length of a newel stair post. Measuring 90mm wide x 90mm deep, it will suit most standard stair 90sq posts. This product is pre sanded ready for varnish, stain, laquer or oil.