These were fairly pricey (Amazon), but they are a game changer. You can use them on your Olympic barbell like other fractional plates, but what's cool about these is you can also
ATX Add-on Micro-Weight Flex Plate (Pair) - 0.5kg
5 Solutions for Dumbbell Micro Weights - Adding Weight in Tiny Increments | Two Rep Cave
Micro Gainz 1.25LB Dumbbell Fractional Weight Plates 4 Pack- Designed for Dumbbell Training and Micro Loading, Made in USA (5.00) : Amazon.co.uk: Sports & Outdoors
The PlateMate: Magnetic Micro Weights
50mm ATX Add-On Green Flex Rubber Plate 0.25 KG (Pair)
Nucleus Urethane Dumbbells - Strength Training from UK Gym Equipment Ltd UK
Micro Gainz 1lb Pair of Dumbbell Fractional Weight Plates for Dumbbell Lifting for sale online | eBay
Micro Gainz NEW 1.25LB Dumbbell Fractional Weight Plates 2 Piece- Designed for Dumbbell Training and Micro Loading, Made in USA : Amazon.co.uk: Sports & Outdoors
1.25LB Dumbbell Micro Plate — Micro Gainz
DOUBLE YOUR DUMBBELL SET - DIY MAGNETIC PLATES FOR YOUR HOME / GARAGE GYM - YouTube
If you have dumbbells I highly recommend the new Microgainz plates. I got the 4-pack of 1.25lb plates and they're extremely high quality! : r/homegym
Micro Gainz NEW 1.25LB Dumbbell Fractional Weight Plates 2 Piece- Designed for Dumbbell Training and Micro Loading, Made in USA : Amazon.co.uk: Sports & Outdoors
Micro Gainz NEW 1.25LB Dumbbell Fractional Weight Plates 2 Piece- Designed for Dumbbell Training and Micro Loading, Made in USA : Amazon.co.uk: Sports & Outdoors
Micro Plate Kit – Ironmaster UK
Homemade micro weights. Add these to get past plateaus