These Muffer can be assembled with DL 50 and DL 100 Engine. It can reduce Noise when you fly the airplane. The introduction as below,

Polished Aluminium Canister with Stainless Steel Flexible Header pipe and teflon couple with two sprin clumps.

Stainless Steel Flexi Header -

340mm from centre of exhaust flange to tip
Corrogated section 200mm long and 34mm Diameter
Tail Section 100mm long
25mm Diameter Outlet

Canister muffler
252 mm long not including pipe
65mm Diameter Body (67mm at weld seam)
25mm Diameter Inlet pipe
16mm Outlet

You will need to buy two sets for twins like the the DL/DA100,

Canister can be used with other brand 25mm headers if needed to suit your install, instead of the supplied flexi header.

Also suits many other Chinese engines 40 - 60CC per cylinder with ~42mm bolt hole spacing on exhaust header such as MT50/57/CRRC etc

Weight:

Canister = 250 gram

Flexi Header = 130 Gram

Both Clips = 15 Gram

Teflon Coupler = 25 Gram.

Total Weight = 420 Gram