The U.S. aircraft register, updated daily
Parts

Roller End

No failure report names the roller end. 3 FAA approvals let 2 companies make a replacement roller end, Gemini Engineering holding the most (2).

Approved replacement parts 3 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a roller end and sell it as an approved part for the models named. These are the companies holding such approvals for a roller end:

For these models most: Boeing 707 (3), Boeing 757 (1), Boeing 737 (1), Boeing 727 (1).

MakerPartReplacesFitsGrantedStatus
Gemini EngineeringROLLER END 69-26552-169-26552-1Boeing 707-300B SERIES, 707-300C SERIES2003-03-31current
Gemini EngineeringROLLER-END-FILLER 69-26552-269-26552-2Boeing 707-300B SERIES, 707-300C SERIES2003-03-31current
Aerostar Engineering INCRoller End Window Shade, Cabin AE69-26552Boeing 69-26552Boeing 707, 727, 7371993-01-12current

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.