They are standard size which fit almost all wooden train sets (Brio, ELC, BigJigs, Learning Curve and Ikea). There are curves which make a tighter curve than standard curve pieces. Here are a selection of extra bits and bobs for your child's wooden train set.
eBay
26 pcs / pack Wooden Train Tracks Set Expansion Pack Compatible with Thomas Wooden Train Fit Brio and Major Railroad Toy Brand
Aliexpress UK
Thomas The Tank Engine Track Expansion Pack, used and incomplete ( see illustration on back of included original box) most of the parts are actually included there, but I have added some additional items including a stop-go section, a track end buffer, 2 short straights and a railway station building and trees to allow for some creative play expansion of an existing set up. Overall there are more items than the expansion pack had originally. Postage to within UK only or arrange collection in Rhyl.
eBay
Original Thomas & Friends Connect and Build Bucket for Diecast Motorized Train Expansion Pack Accessories Boys Toys Tracks Set
Aliexpress UK
Thomas The Tank Engine & Friends Adventures Straights & Curves Track Pack. Condition is New. Dispatched with Evri Tracked.
eBay
Wooden Train Track Wooden Railway Compatible with Thomas All Major Brands Wooden Toys for Kids Track Expansion Accessories
Aliexpress UK
Send your engines over, under and around as they race towards adventure! Includes motorised Thomas engine. Watch the No. 1 blue engine complete his most breath-taking stunt yet. After a tall, spiral ascent with Harold the helicopter, Thomas speeds down a huge ramp and the velocity launches him into the air!
eBay
Rail Track Expansion Pack For Railway King Classical Train City Trains Flexible Tracks Straight Curved Rails Building Block Toys
Aliexpress UK
eBay
Rail Track Expansion Pack For Railway King Classical Train City Trains Flexible Tracks Straight Curved Rails Building Block Toys
Aliexpress UK
Great for motor and sensory skills.
eBay
Rail Track Expansion Pack for Railway King Classical Train City Trains Flexible Tracks Straight Curved Rails Building Block Toys
Aliexpress UK
eBay
Thomas and His Friends Track Master Twisting Tornado Set Thomas The Tank Engine Toy Set Track Master Train Children Holiday Gift
Aliexpress UK
The THOMAS & FRIENDS PORTABLE TAKE-N-PLAY Expansion Pack - Track connectors is a durable and portable toy accessory made from ABS plastic, featuring 11 various pieces to create new tracks and connect sets. With a theme of animation and a focus on the character Thomas from the popular TV show Thomas And Friends, this expansion pack allows children to expand their train track play experience. Made by Fisher Price in or around 2013, this compatible product is designed specifically for train track play and is a great addition to any Thomas And Friends fan's collection.
eBay
Thomas & Friends Track Master Thomas & Nia Cargo Delivery Diecast Toy Train & Track Haulage Playset Children's Birthday Gifts
Aliexpress UK