Explore Scientific 5X Barlow for 1.25" eyepieces | Astronomics.com
Amazon.com : SVBONY Barlow Lens 5x Blackened Metal with T adapter M42x0.75 Thread Telescope Accessory for 1.25 inch Telescope Eyepiece for Superior Sharpness and Color Correction : Electronics
Apertura 5X APO Barlow Lens - 1.25" - 5XB1 - Telescopes at Telescopes
Amazon.com : Barlow Lens 5X, Multi-Coated 1.25" 5X Barlow Lens M42 Thread for Telescopes Eyepiece M42 x 0.75mm Thread T-Adaptor, Can be Attached to DSLR or SLR Camera via a Separate Ring