Suits most routers for cross trenching on the Triton Workcentre. Also suits fitting of most jigsaws for use with early model Triton Router and Jigsaw Tables (manufactured prior to model RTA300). Compatibility - Suits Series 2000 Workcentre and MK3 Workcentre. Suits most ½" and ¼" routers - "D" handle models not suitable. Triton Precision Router is recommended.