Lee Filters SW150 Mark II Lens Adapter for Tamron SP 15-30mm f/2.8 Di VC USD Lens Lee Filters SW150 Mark II Lens Adapter - Front Ring - Compression Ring - Locking Ring - Lee Filters Lifetime Limited Warranty Compatibility: Compatible Lens: Tamron SP 15-30mm f/2.8 Di VC USD Lens Material: Aluminum alloy