They are held on the cable by an elastic band
Middle Atlantic VT-3 5-1/4" (3 Space) Vent Panel with Large Perforation Pattern
If the hole spacing is the same
Nikon BL-5 Battery Chamber Cover for MB-D12 Battery Pack
the matte box includes NATO accessory rails on the left
EDDYSTONE 11451PSLA Metallic Enclosure, Diecast, IP54, Instrument, Aluminium Alloy, IP54, 31 mm, 38 mm Manfrotto 059 They are held on theThe 11451PSLA is a Thin Wall Enclosure with die cast aluminium alloy (BS1490, LM2M) body, natural finish and shallow lids. Countersunk lid holes. Lids secured using 4 off M3. 5 x 12 Pozidriv #2 Taptite screws. Two piece "lap joint" construction. Robust Lightweight Excellent EMC performance Easily machined IP54 Protection rating (sealed) Applications Industrial Contents Box, Lid and 4 cover screws. Product details External Depth Imperial 2. 07" Body