If I purchase multiple, will each set be different?

All these sets contain the same 6 different cars.

What scale is this for?

N scale. The smaller trains (not h o).

These will be a gift but confused on info about coupling - will they couple to a Bachmann engine bought in 2020?

These cars have knuckle type connectors. If the cars your connecting to have the same, the they'll work out of the box. Otherwise, you'll need to change the connector, which can be done pretty easily.

ASIN	B004UXXQXQ
Assembly Required	No
Batteries Included?	No
Batteries Required?	No
Color	Multiple
Customer Reviews	4.7 4.7 out of 5 stars (296)
Date First Available	22 August 2012
Educational Objective(s)	Construction Skill, Hand-Eye Coordination
Item model number	106-6275
Language	English
Manufacturer recommended age	14 years and up
Material Type(s)	Plastic
Number of Game Players	1
Number of Puzzle Pieces	1
Product Dimensions	60.96 x 1.91 x 2.86 cm; 181.44 g
Radio Control Suitability	Train play scenarios
Rail Gauge	9mm
Remote Control Included?	No
Scale	No
number_of_channels	4
tech_spec_battery_description_toys	no batteries required

Kato N Mixed Freight Train Set - 6 Car Assortment

Description

Specifications

Reviews

Common Questions