This is a set of resin 1/48 De Havilland Mosquito Flame Dampening Exhaust Shrouds from Ultracast.   These are designed to fit the Tamiya kit #61062 & #61066.

Click on images below to see larger images

Tamiya part on left, Ultracast replacement part on right.

These resin shrouds represent the later larger shrouded exhausts.  The inlet vent is open for added realism.

These will be an excellent item to use if you want to build one of the later mk's of the Mosquito. 

You can buy this and many other detail items directly from Ultracast.

Steve Bamford